My First Time Without My Parents

When i was 17 . My parents told me they were going to Canada for 12 weeks with my dads work . They would be flying from Heathrow London Airport . In a few days . If i wanted my friend Bob could come to stay . Bob stayed with me . He is a year older than me . He had his own room at the top of the stairs . He did what he wanted to . Some things we did together but we were not joined at the hip . We were both attending college . Real British college . Not the schools that Americans call college . We go after we leave school . To study for qualifications . The highest being degrees . In Britain the standard of education is at least 3 years in advance of Americans of the same age . There were days when each of us did not have any lectures . One day when i had lectures . When i reached my college . The day had been cancelled . I got on my bus and headed home . Planning to grab something from my room . Then heading to the swimming baths for exercise . Bob would be at college . Having to go in later than me . I opened the front door and set off upstairs . Half way up i heard noises coming from Bobs room . His door was not fully closed . When i looked he was naked and having sex with a girl . I grabbed what i needed from my room and as quietly as i could . I headed back downstairs . On the stairs i looked up in to his room . Hoping to see who the girl was . It was the one girl i would never expect to see . She was his 14 year old sister . I left the house . When i went back after swimming they had both gone . Seeing him having sex with his sister was a turn on . At night i wanked thinking about them . I wanted to have sex with her . After a few days my imagination was driving me mad . I wanted to know if it was the first time . I wanted to ask him about it . I didn't know how to do it . In the end i just said it . I told him what i had seen . He seemed relieved to tell me about it . He first did things with her when she was 6 and he was 10 . He got her to undress and let him touch her . Then she let him lick her pussy . This always made him want to wank . He always knelt next to her . Making sure to cum on her . He got her to crouch over his face when he wanked . So he could lick her . When she was 10 she told him she was liking being licked . It made her feel nice . That was when he fucked her for the first time . They had been having sex ever since that day . He asked me if i wanted to have sex with her . He would ask her for me . For most of the remaining time . She let me have sex with her . Sometimes he liked to watch and wank . This was what he called a condition of letting me fuck her . After a few times i was liking to hear him wanking when he was watching . He never tried to join in .